diff -up cpu-1.4.3/src/plugins/ldap/ld.c.mod-delete cpu-1.4.3/src/plugins/ldap/ld.c
--- cpu-1.4.3/src/plugins/ldap/ld.c.mod-delete	2010-11-05 21:41:38.000000000 -0600
+++ cpu-1.4.3/src/plugins/ldap/ld.c	2010-11-05 21:45:29.000000000 -0600
@@ -285,19 +285,26 @@ ldapBuildListStr (int mod_op, char *mod_
   if (mod_type == NULL || strlen(mod_type) == strspn(mod_type, " "))
     return mods;
 
-  if (value == NULL || strlen(value) == strspn(value, " "))
-    return mods;
-
   mods = ldapAddList (mods);
 
-  temp = (char **) malloc (sizeof (char *) * 2);
-  bzero (temp, sizeof (char *) * 2);
-  temp[0] = value;
-  temp[1] = NULL;
+  if (value == NULL || strlen(value) == strspn(value, " "))
+    {
+      mods[list_size]->mod_op = LDAP_MOD_DELETE;
+      mods[list_size]->mod_type = strdup (mod_type);
+      mods[list_size]->mod_values = NULL;
+    }
+  else
+    {
+      temp = (char **) malloc (sizeof (char *) * 2);
+      bzero (temp, sizeof (char *) * 2);
+      temp[0] = value;
+      temp[1] = NULL;
+
+      mods[list_size]->mod_op = mod_op;
+      mods[list_size]->mod_type = strdup (mod_type);
+      mods[list_size]->mod_values = temp;
+    }
 
-  mods[list_size]->mod_op = mod_op;
-  mods[list_size]->mod_type = strdup (mod_type);
-  mods[list_size]->mod_values = temp;
   list_size++;
   return mods;
 }